οὐκ ἔστι λύπης, ἄν περ ὀρθῶς τις σκοπῇ, ἄλγημα μεῖζον τῶν ἐν ἀνθρώπου φύσει → amongst the natural ills of man there is, if one but look at it aright, no greater pain than grief
purifying: P. and V. καθαρμός, ὁ, λύσις, ἡ, P. κάθαρσις, ἡ.
in medical sense: P. κάθαρσις, ἡ.